Leak Detection

Covina Leak Detection

Locating Leaks in West Covina & the San Gabriel Valley

An undetected leak can cause significant water damage to your home and allow mold and mildew to grow. When a leak is beneath the slab foundation or behind a wall, locating the exact damage of the pipe can be a challenge. Courtesy Plumbing uses state-of-the-art equipment for precision leak detection in Covina, Arcadia, Duarte, Claremont, Montclair, Brea, West Covina, and other surrounding communities in the San Gabriel Valley.

If you need help with a slab leak or other types of water leaks, call (626) 774-7167 to schedule service.

Detecting Hidden Water Leaks

Accurate leak detection is essential for prompt repairs and preventing damage to your home. We have the most advanced equipment to detect all types of leaks, including slab leaks. When a pipe leaks under the slab, it can be difficult to identify the source of the problem. Fortunately, there are some signs that can help tell you when you have a slab leak.

You may have a slab leak if you notice:

  • An excessive water bill
  • Hot or cold spots on the floor
  • A damp or soggy spot on the carpet or flooring
  • An odor of mildew or mold

Because slab leaks occur under the concrete slab and other leaks happen behind walls, pinpointing the source without damaging your flooring or walls has been a challenge. The development of electronic leak detection equipment enables our technicians to find the exact location of the pipe damage without causing any damage to your home. Our Covina leak detection experts will trace the path of the pipe to determine the exact position of the leak and use trenchless methods for pipe repair.

Gas Leak Detection & Repair

In addition to water leaks, Courtesy Plumbing is also an expert in detecting gas line leak. Although there are many signs of a gas leak such as a rotten egg smell, a hissing sound near the connections, or dying vegetation around the gas line, nothing beats the expertise of a professional gas plumber. With Courtesy Plumbing, you can rest assured we have the latest equipment for accurate gas leak detection in Covina and the surrounding areas. Our plumbing team also provides fast, reliable repairs to keep you, your family, and your home safe from potential gas leak explosions or fires.

Call (626) 774-7167 for accurate water and gas leak detection and repairs.


Coupons & Specials
  • 10% Off For All First Responders & Military
    This cannot be combined with any other offer. Restrictions may apply.
    Valid from Jan 1, 2021 - Dec 31, 2021

Let Us Be Your Plumbers For Life

  • Customer Focused

    Our aim is in our name! We are committed to courteous, honest, efficient service designed to solve your plumbing problems quickly. Call our team today to get started and we'll be sure to find the right solution and keep you totally satisfied!

  • Honest Service

    We work to provide honest service from start to finish. We won't sell you anything you don't need, we'll give competitive prices, and our team will provide honest communication through the whole process.

  • Highly Trained Technicians

    Our carefully hand-selected crew is perfect for any of your plumbing needs. We hold a high standard on work, ethics, and customer service because you and your home deserve the best.

  • Properly Prepared

    Our experts are equipped with state of the art, top of the line tools and materials. Quality is always at the top of our list of things we care about so your home only receives the best work.


  • Gave a reasonable quote, then did the job quickly and thoroughly

    “Rick came in, assessed situation, gave a reasonable quote, then did the job quickly and thoroughly. He said that there was a chance that he would have to cut the wall, but was able to do the job ...”

    - Michael M.
  • He took the time to make sure everything was working

    “We have had some issues with our shower and toilet backing up. Another plumbing service has come out several times to try and fix the problem. The office staff is helpful, but the technicians don't ...”

    - Cynthia S.
  • Very honest and hard-working individuals

    “I can always count on Courtesy Plumbing to get the job done. They have been to my house several times for different reasons and every time they made sure that everything was working correctly before ...”

    - Derek E.
  • I'm well pleased from the diligent dispatch to Aaron doing the work

    “First time we used Courtesy Plumbing and I'm well pleased from the diligent dispatch to Aaron doing the work. I will call upon Courtesy Plumbing again. Thank you!”

    - Carrie M.
  • I keep coming back to Courtesy because they are honest, good and priced fairly!

    “Once again, Courtesy Plumbing came to rescue for me last weekend! Why do I keep using Courtesy? They are honest as the day is long. They don't try to make up reasons to jack up the bill. They fix what ...”

    - David L.